<li [field:global runphp='yes' name=autoindex]
$a="style='margin-right:0px'";
$b="";
if ((@me%4)==0)  @me=$a;
else  @me=$b;
[/field:global]><a href="[field:arcurl/]">
            <p class="image-container"><span class="thumbnail"><img src="[field:picname/]" class="thumb"></span></p>
            <span class="text">[field:title /]</span></a></li>